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Biol201 Final Exam Study Guide - Concordia
University
Evolution - Answers✔Change in a kind of organism over time; process by which modern
organisms have descended from ancient organisms.
Grand Unifying Theory - Answers✔possible explanation that is supported by vast evidence
Plato - Answers✔species have a fixed essence and it does not change
Aristotle - Answers✔introduced scala naturae, all things may be placed on an unbroken ladder
from lower forms to humans, first idea of classifying organisms
Cordus Linneaus - Answers✔species are grouped according to their place in God's great design,
set framework of classification system
Jean-Baptist Pierre Antoine de Monet - Answers✔first to suggest how life changed over time and
why, published Philosophic Zoologique ... combined living species with fossils and lines of
decent, said new species arrive by spontaneous germination, evolve up scala naturae
use and disuse - Answers✔the idea that parts of the body that are used extensively become larger
and stronger, while those that are not used deteriorate - first principle
Inheritance - Answers✔The process by which physical and biological characteristics are
transmitted from the parent (or parents) to the offspring - second principle
Darwin and Wallace - Answers✔the two individuals who came up with the idea of natural
selection. "On the Origin of Species by means of Natural Selection" - finches
natural selection - Answers✔evolution is driven by
Evolution Mechanisms - Answers✔variation, heredity, survival of fittest, natural selection
variation - evolution mechanism - Answers✔individuals in a species show a wide range of
variation
heredity - evolution mechanism - Answers✔how favorable genes pass on to next generations
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natural selection - evolution mechanism - Answers✔offspring with survival traits
survival of fittest - evolution mechanism - Answers✔some traits combined with certain
environments show more success
mutation can cause - Answers✔evolution because the ones with the mutation survive ex. moths
Evolution is measured as - Answers✔frequency of change in alleles in inheritance
living things have evolved by - Answers✔- earth formed 4.5 billion years ago
- oceans formed 4 billion years ago
- 1st fossils of prokaryotes 3.5 billion years ago
First common ancestor - Answers✔prokaryotes
eukaryotes formed by - Answers✔engulfing prokaryotes that then became mitochondria and
chloroplasts
natural selection - Answers✔A process in which individuals that have certain inherited traits tend
to survive and reproduce at higher rates than other individuals because of those traits.
directional selection - Answers✔Form of natural selection in which the entire curve moves;
occurs when individuals at one end of a distribution curve have higher fitness than individuals in
the middle or at the other end of the curve
stabilizing selection - Answers✔Natural selection that favors intermediate variants by acting
against extreme phenotypes (weight of babies at birth)
Disrupting Selection - Answers✔natural selection in which individuals at the upper and lower
ends of the curve have higher fitness than individuals near the middle of the curve
sexual selection - Answers✔A form of natural selection in which individuals with certain
inherited characteristics are more likely than other individuals to obtain mates.
adaptation - Answers✔helps an organism survive and reproduce
- Answers✔
genetic drift - Answers✔A change in the allele frequency of a population as a result of chance
events rather than natural selection. (small population more likely)
evidence for evolution - Answers✔fossil records
fossil - Answers✔The preserved remains or traces of an organism that lived in the past
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